Code 2935 50 · Heading 2935

Perfluorooctane sulfonamides, excluding four named substances

This covers perfluorooctane sulfonamides other than N-Methylperfluorooctane sulfonamide, N-Ethylperfluorooctane sulfonamide, N-ethyl-N-(2-hydroxyethyl) perfluorooctane sulfonamide and N-(2-hydroxyethyl)-N-methylperfluorooctane sulfonamide.

For example

A perfluorooctane sulfonamide other than the four named substances

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See the official tariff text

Official tariff text

Perfluorooctane sulphonamides (excl. N-Methylperfluorooctane sulphonamide, N-Ethylperfluorooctane sulphonamide, N-Ethyl-N-(2-hydroxyethyl) perfluorooctane sulphonamide and N-(2-Hydroxyethyl)-N-methylperfluorooctane sulphonamide)

The path to this code

Every code is reached through these choices, one level at a time.

Step 4 of 4

Step 1 · Section VI Products of the chemical or allied industries
Is it an inorganic or organic chemical; a pharmaceutical product; a fertilizer; a tanning or dye extract, pigment, paint, varnish, filler or printing ink; an essential oil, perfume, cosmetic or toilet product; soap, a surface-active, washing, cleaning, polishing or wax product; a protein, modified starch, glue or enzyme; an explosive, pyrotechnic article, match or other specified combustible material; a photographic or cinematographic product; or another chemical product?
✓
Step 2 · Chapter 29 Organic chemicals 2 of 11 chapters in section VI
What type of organic chemical is it—for example, a hydrocarbon, alcohol, acid, nitrogen compound, sulfur compound, heterocyclic compound, vitamin, hormone, glycoside, plant alkaloid, sugar, antibiotic or another listed organic compound?
✓
Step 3 · Heading 2935 Sulphonamides 35 of 42 headings under chapter 29
Is it N-methylperfluorooctane sulfonamide, N-ethylperfluorooctane sulfonamide, N-ethyl-N-(2-hydroxyethyl) perfluorooctane sulfonamide, N-(2-hydroxyethyl)-N-methylperfluorooctane sulfonamide, another perfluorooctane sulfonamide, or a sulfonamide other than a perfluorooctane sulfonamide?
✓
Step 4 · Subheading 2935 50 Perfluorooctane sulphonamides (excl. N-Methylperflu… 5 of 6 subheadings under heading 2935
Is it a perfluorooctane sulfonamide other than the four specifically named substances?

Full 8-digit codes

Pick the description that best matches your product.

1 code below this one

2935 50 00 Perfluorooctane sulphonamides (excl. N-Methylperfluorooctane sulphonamide, N-Ethylperfluorooctane sulphonamide, N-Ethyl-N-(2-hydroxyethyl) perfluorooctane sulphonamide and N-(2-Hydroxyethyl)-N-methylperfluorooctane sulphonamide) 6.5% Save

Compare the sibling codes

Classification decides the rate here: from 0.0% to 6.5%.

2935 10 N-Methylperfluorooctane sulphonamide 6.5%
2935 20 N-Ethylperfluorooctane sulphonamide 6.5%
2935 30 N-Ethyl-N-(2-hydroxyethyl) perfluorooctane sulphonamide 6.5%
2935 40 N-(2-Hydroxyethyl)-N-methylperfluorooctane sulphonamide 6.5%
2935 50 Perfluorooctane sulphonamides (excl. N-Methylperfluorooctane sulphonamide, N-Ethylperfluorooctane sulphonamide, N-Ethyl-N-(2-hydroxyethyl) perfluorooctane sulphonamide and N-(2-Hydroxyethyl)-N-methylperfluorooctane sulphonamide) you are here 6.5%
2935 90 Sulphonamides (excl. perfluorooctane sulphonamides) 0.0%

Export to Norway

What Norwegian customs charges when goods like these are imported into Norway.

29.35.5000

Other perfluorooctane sulphonamides

Ordinary duty

Duty free

Goods of EU origin

Duty free You need documentation of EU origin to use this rate.

Norwegian tariff data version 1.5/1.2, last checked Aug. 9, 2026.

Contains data from Norwegian Customs (data.toll.no), licensed under CC BY 4.0, adapted for display.

Export to the United Kingdom

What UK customs charges when goods like these are imported into the UK.

2935 50 00 00

Other perfluorooctane sulphonamides

Ordinary duty

6.0%

Goods of EU origin

Duty free You need documentation of EU preferential origin to use this rate.

These rates apply in Great Britain. Different rules may apply for goods entering Northern Ireland.

UK tariff data version v4.0.1576, last checked Aug. 9, 2026.

Contains public sector information licensed under the Open Government Licence v3.0.

Source: UK Department for Business and Trade (data.api.trade.gov.uk).

Check the neighbouring codes

The codes just before and after this one, in case a nearby group fits better.

See all 6 codes at this level

Previous code 2935 40

N-(2-Hydroxyethyl)-N-methylperfluorooctane sulphonamide

you are here 2935 50

Perfluorooctane sulphonamides (excl. N-Methylperfluorooctane sulphona…

Next code 2935 90

Sulphonamides (excl. perfluorooctane sulphonamides)

Duty rates shown here are estimates, read from official EU / Danish, Norwegian and UK tariff data for orientation only. Confirm the current rate with SKAT, TARIC, Norwegian Customs or the UK Online Trade Tariff before you file. The rate you pay can also depend on the country of origin. These are base customs duties only: import VAT, excise duties, anti-dumping duties and safeguard or quota measures are not included.